Fermenting Gram-negative rod, of the Enterobacteriaceae family
Urinary tract infections
Intra-abdominal and biliary infection
Community acquired pneumonia. Occasionally presents with thick blood-tinged ("currant jelly") sputum.
Hospital acquired pneumonia
Some strains are highly virulent and mucoid, associated with metastatic infections, particularly liver abscesses.
May require contact precautions if highly resistant i.e. ESBL, carbapenem resistant.
Treatment of choice for invasive ESBL strains is a carbapenem.